5. Measurement of Hydrocarbons in the IGAC/PEACAMPOT II Aircraft Observations and Ground-Based (Fukue Island) Observations
Fumio SAKAMAKI (National Institute for Environmental Studies)
(1)IntroductionHydrocarbons are common trace components of the global troposphere. They are influencing the photochemistry of the tropospheric atmosphere, particularly the budget of odd hydrogen (OH, HO2), O3 and CO. Their importance for the chemistry in the troposphere is recognized as same as NOx. Therefore, the accumulation of data on their distribution and variation on a regional or global scale is required in studying the photochemistry of the troposphere. This study shows the results of measurements of hydrocarbons in the IGAC/PEACAMPOT II Observations. |
Aerial samples
Ground samples
Analysis
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1) FY1996 Results of two aircraft observations are summarized in Table 1 (97/1/11) and Table 2 (97/1/13). Results of ground-based observation at Fukue Island are also summarized in Table 3. 2) FY1997 Results of three aircraft observation are summarized in Table 4 (97/12/9), Table 5 (97/12/12) and Table 6 (97/12/13). Results of ground-based observation at Fukue Island are also summarized in Table 7. Time in this table shows a middle time of sampling period (6 hr). 3) FY1998 Results of three aircraft observation are summarized in Table 8 (99/2/2), Table 9 (99/2/4) and Table 10 (99/2/6). Results of ground-based observation at Fukue Island are also summarized in Table 11. Time from 99/1/28 5:00 to 99/2/9 5:00 in this table shows a middle time of sampling period (24 hr). |